CN108104110A - The construction method of high pressure spray jetting soil cut-pff wall - Google Patents
The construction method of high pressure spray jetting soil cut-pff wall Download PDFInfo
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- CN108104110A CN108104110A CN201711303489.XA CN201711303489A CN108104110A CN 108104110 A CN108104110 A CN 108104110A CN 201711303489 A CN201711303489 A CN 201711303489A CN 108104110 A CN108104110 A CN 108104110A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
- E02D5/187—Bulkheads or similar walls made solely of concrete in situ the bulkheads or walls being made continuously, e.g. excavating and constructing bulkheads or walls in the same process, without joints
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The construction method of high pressure spray jetting soil cut-pff wall, A, determined according to cut-pff wall construction access road positioning, unwrapping wire, make spray-hole away from;B, using drilling machine prebored hole;C, high spray booth vehicle is in place, starts high-pressure hydraulic pump, air compressor and cement slurrypump, starts angle speed rotary swing power head and hoisting mechanism;D, angle speed rotary swing power head variable angular velocity churning or variable angular velocity pendulum spray in the range of 180 ° in the range of 360 °, can reach in above-mentioned angular range has grade or stepless variable angular velocity;E, playpipe is promoted to design curtain height under the driving of hoisting mechanism constant speed;By the sequence construction in two sequence holes, the construction of whole cut-pff walls or curtain is completed.Advantage is thoroughly to solve the disadvantage that board wall is too thin at pendulum, the calmly close spray-hole of spray, non-deformability is weak, can relatively accurately be adjusted to the thickness and shape of wall within the specific limits, the cement consolidation shape formed has the shape feature of 4 ~ attached drawing of attached drawing 6.
Description
Technical field
The present invention relates to architecture construction field, especially a kind of construction method of high pressure spray jetting soil cut-pff wall.
Background technology
Jet grouting is a very ripe technology, and reinforcement mechanism is clear and definite, and application field is extensive.Because of reinforcing side
The difference of formula, jet grouting are divided into churning and fixed, pendulum spray;Because of the needs of spraying operation radius, it is divided into as single pipe method, double
Tube method and three tube method.When jet grouting uses churning mode, the rotary churning pile formed can be used for foundation stabilization;Work as rotation
Stake is sprayed when by the way of set overlaps, it is this anti-available for the cut-pff wall of hydraulic engineering and the seepage proof curtain of foundation pit supporting project
Ooze wall into wall thickness is big, non-deformability is strong.Shortcoming be arrangement pilespacing (pitch of holes) it is smaller, cement consumption is big, cost compared with
It is high.Compared with rotary churning pile, pendulum sprays and spray operating radius is big surely, pitch of holes is remote, and cement consumption is relatively low, cost saves.But pendulum spray
With determine spray there are one fatal defects, form that the thickness of board wall is too thin, and non-deformability is weak, reliability at spray-hole
Difference.Particularly to deforming more sensitive pattern foundation pit supporting structure seepage proof curtain engineering, it some times happens that the leakage accident of wall body rupture, because
This is applied fewer and fewer, is gradually suffered exit.Through calculating churning about one times is differed with pendulum spray, the cost sprayed surely.Traditional height
Jet groutinl equipment its jet pressure, flow, lance lift, swing speed parameter are pressed into being fixed, institute's shape during wall
Into cement consolidation shape see attached drawing 2 and 3.It is used as general cut-pff wall, from reduction project cost, it is undesirable to wall body
Thickness is excessive.But it puts the shape for spraying and being sprayed into surely wall and thickness You Full foots not to require.Traditional high pressure jet grouting technique
Defect can be solved by the present invention, make into wall shape and thickness reaches desirable.
Retain and put the advantages of spraying and spraying seepage proof curtain surely, thickness of wall body is too thin, non-deformability is weak, can at solution spray-hole
By property it is poor the problem of, be the main purpose that patent formula of the present invention needs solve.
The content of the invention
In order to solve above-mentioned problems of the prior art, the present invention provides a kind of high pressure spray jetting soil cut-pff wall
Construction method.
The technical solution adopted by the present invention to solve the technical problems is:The construction party of high pressure spray jetting soil cut-pff wall
Method, construction method are implemented based on wall-forming device, and wall-forming device includes the angle speed swing that can do angle speed swing campaign
Power head, the top of angle speed rotary swing power head are equipped with hoisting mechanism, are equipped with back below angle speed rotary swing power head or above
Adapter, the side of swivel joint are equipped with the delivery pipe of single channel, binary channels or triple channel, swivel joint connection playpipe, spray
The end for penetrating pipe is equipped with spray-hole;Delivery pipe is to spray-hole conveying high-pressure water, gas and cement mortar;Angle speed rotary motive power head can be
Variable angular velocity churning or the variable angular velocity pendulum spray in the range of 180 ° in the range of 360 °.
The construction method of high pressure spray jetting soil cut-pff wall, construction method include the following steps:
A, according to cut-pff wall or seepage proof curtain determine construction access road positioned, unwrapping wire, and according to spray technology, radius, make
Spray-hole away from;
B, using drilling machine prebored hole, hole diameter, drilling depth and borehole perpendicularity should all meet design requirement;
C, high spray booth vehicle is in place, will be in the hole of playpipe tripping in drilling machine preboring;Start high-pressure hydraulic pump, air compressor and cement mortar
Pump, inspect medium injection it is normal after, then start angle speed rotary swing power head and hoisting mechanism successively;
D, angle speed rotary swing power head variable angular velocity churning or variable angular velocity pendulum spray in the range of 180 ° in the range of 360 °, makes biography
Angle speed swing campaign is changed into the constant speed swing campaign of system;And it can reach in above-mentioned angular range and have grade or stepless angle
Speed;
E, playpipe is promoted to design curtain height, that is, completes the construction of one section of wall under the driving of hoisting mechanism constant speed;It presses
The sequence construction in two sequence holes completes the construction of whole cut-pff walls or curtain.
Compared to the prior art the present invention, the advantage is that:
(1)It thoroughly solves the disadvantage that board wall is too thin at pendulum, the calmly close spray-hole of spray, non-deformability is weak, extends traditional work
The application of skill.It is fast by the angle of angle speed rotary swing power head, the thickness of wall can be relatively accurately adjusted within the specific limits
And shape, the cement consolidation shape formed have the shape feature of attached drawing 4- attached drawings 6.
(2)Using original high-pressure rotary-spray equipment, the art of this patent can be realized in repacking angle speed rotary swing power head, saves
Investment, popularization basis are good.Available for pattern foundation pit supporting structure seepage proof curtain engineering and the cut-pff wall engineering of water conservancy.Country's deep pit support at present
Shield seepage proof curtain engineering has a large capacity and a wide range, while the cut-pff wall engineering of water conservancy is quite a few, has larger popularizing application prospect.With biography
The socket rotary churning pile cut-pff wall of system is compared, and unit volume project cost can reduce by 40% or so.Economic benefit and social benefit are huge
Greatly, national energy-saving emission reduction policy is met.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
It obtains substantially or is recognized by the practice of the present invention.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 illustrates attached drawing for wall-forming device overall structure of the present invention;
Fig. 2 is the plan structure signal attached drawing of existing cut-pff wall or seepage proof curtain;
Fig. 3 is the plan structure signal attached drawing of existing cut-pff wall or seepage proof curtain;
Fig. 4 is the plan structure signal attached drawing of cut-pff wall of the present invention or seepage proof curtain;
Fig. 5 is the plan structure signal attached drawing of cut-pff wall of the present invention or seepage proof curtain;
Fig. 6 is the plan structure signal attached drawing of cut-pff wall of the present invention or seepage proof curtain;
Reference sign:Playpipe 1, spray-hole 2, swivel joint 3, delivery pipe 4, angle speed rotary swing power head 5.
Specific embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
In the description of the present invention, it is to be understood that term " longitudinal direction ", " transverse direction ", " on ", " under ", "front", "rear",
The orientation or position relationship of the instructions such as "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " is based on attached drawing institutes
The orientation or position relationship shown is for only for ease of the description present invention rather than instruction or implies that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
The construction method of high pressure spray jetting soil cut-pff wall, construction method are implemented based on wall-forming device, wall-forming device
The angle speed rotary swing power head 5 of angle speed swing campaign can be done by including, and the top of angle speed rotary swing power head 5 is equipped with elevator
Structure 6 is equipped with swivel joint 3 below angle speed rotary swing power head 5 or above, and the side of swivel joint 3 is equipped with single channel, bilateral
The delivery pipe 4 in road or triple channel, swivel joint 3 connect playpipe 1, and the end of playpipe 1 is equipped with spray-hole 2;Delivery pipe 4 is to spray
2 conveying high-pressure water of perforation, gas and cement mortar;Angle speed rotary motive power first 5 can in the range of 360 ° variable angular velocity churning or
Variable angular velocity pendulum spray in the range of 180 °.
The angle speed rotary swing power head 5 is made of gear-box 51, power set 52 and controller 53;Gear-box 51 is to subtract
Fast gear-box, power set 52 are phase asynchronous ac variable-frequency electric motor, and controller 53 is frequency converter;Phase asynchronous AC frequency conversion
The output terminal of motor is connected to reduction gear box, and the output terminal of reduction gear box is connected to playpipe 1;Frequency Converter Control three-phase
Asynchronous Communication adjustable frequency motor rotating speed and then the rotating speed for controlling playpipe 1.
The construction method of high pressure spray jetting soil cut-pff wall includes the following steps:
A, according to cut-pff wall or seepage proof curtain determine construction access road positioned, unwrapping wire, and according to spray technology, radius, make
Spray-hole away from;
B, using drilling machine prebored hole, hole diameter, drilling depth and borehole perpendicularity should all meet design requirement;
C, high spray booth vehicle is in place, will be in the hole of 1 tripping in drilling machine preboring of playpipe;Start high-pressure hydraulic pump, air compressor and cement
Stock pump, inspect medium injection it is normal after, then start angle speed rotary swing power head 5 and hoisting mechanism 6 successively;
D, angle speed rotary swing power head 5 variable angular velocity churning or variable angular velocity pendulum spray in the range of 180 ° in the range of 360 °, makes
Angle speed swing campaign is changed into traditional constant speed swing campaign;And it can reach in above-mentioned angular range and have grade or stepless change
Angular speed;
E, playpipe 1 is promoted to design curtain height, that is, completes the construction of one section of wall under the driving of 6 constant speed of hoisting mechanism;
By the sequence construction in two sequence holes, the construction of whole cut-pff walls or curtain is completed.
Optimization, in step A, spray-hole away from determine determined according to the soil layer lithological characteristic of construction ground, spray-hole away from
It the increase of soil layer lithology and is gradually reduced.
Optimization, in step B, using drilling machine prebored hole, drilling internal diameter is more than the outer diameter of playpipe 1;Hole depth is cut-pff wall
Or the depth of seepage proof curtain;Pore-forming perpendicularity deviation is in 1%.
Optimization, in step C, start high-pressure hydraulic pump, air compressor and cement slurrypump;In high-pressure hydraulic pump, water pressure
25MPa-30MPa, flow 100L/min-150L/min;In air compressor, air pressure 0.7MPa-1.0MPa, flow 2m3/
min-3m3/min;In cement slurrypump, cement paste pressure 2MPa-2.5MPa, flow 120L/min-150L/min;
Optimization, in step C, start angle speed rotary swing power head 5 and hoisting mechanism 6;The average rotation of angle speed rotary swing power head 5
Rotary speed 10r.p.m-12r.p.m, and the angle gear ratio between maximum and minimum is 1:10-1:6;The promotion speed of hoisting mechanism 6
Spend 12cm/min-16cm/min.
Optimization, the thickness of cut-pff wall or seepage proof curtain is 200mm-600mm.
Its principle of the construction method of high pressure spray jetting soil cut-pff wall is as follows:High-pressure jet is in pressure, flow certain condition
Under, there are much relations in the action time of operating radius and jet stream.With regard to big, action time is short, sprays for long action time, radius of spray
Radius is penetrated with regard to small.If jet pressure, flow, lance lift speed are constant, the swing of original constant speed is transported in the range of 360 °
It is dynamic to be changed to speed change swing, though the swing speed perpendicular to cut-pff wall axis direction accelerate and parallel to cut-pff wall axis direction
Swing speed slow down, this method can make its cut-pff wall induration flat shape as shown in attached drawing 4- attached drawings 6.In other words, originally
Invention is intended to control and change the injecting time of high-pressure jet different angle in the range of 360 °, make cut-pff wall consolidation shape with
Size reaches into the requirement of wall, that is, it is controllable and transformable to accomplish shape and size.
The construction method of this high pressure spray jetting soil cut-pff wall realizes its technical solution in following processing steps:Playpipe 1
In the hole that tripping in is drilled in advance, spray-hole 2 is high-pressure jet spray-hole, starts pump-up system, by swivel joint 3 and single, double
Or triple channel delivery pipe 4, to 2 conveying high-pressure water of spray-hole, gas and cement mortar.The hoisting mechanism 6 of startup playpipe 1 does constant speed and carries
Elevator is moved, while starts speed change rotary motive power first 5 and the churning of angle speed is done in the range of 360 ° or angle speed is done in the range of 180 °
Pendulum spray, makes to form required cut-pff wall section in foundation soil.Speed change rotary motive power first 5 is by 51 phase asynchronous AC frequency conversion of gear-box
Motor 52 and frequency converter 53 form.
It transform rotary swing power head as angle speed rotary swing power head, the driving principle and construction of angle speed rotary swing power head are chatted
It states as follows:Angle speed rotary swing power head is made of gear-box, phase asynchronous ac variable-frequency electric motor and frequency converter.Gear-box can be adopted
With traditional The gear deceleration structure, the driving source of angle speed rotary swing power head selects phase asynchronous ac variable-frequency electric motor, with it
The frequency converter of matching uses velocity checking circuits, with the letter for the speed detector (tg, pla etc.) being mounted on asynchronous motor machine
Number for speed signal, operational loop is sent into, motor can be made to be operated by command speed according to instruction and computing.
Angle speed rotary swing power head 5 can in the range of 360 ° variable angular velocity churning or in the range of 180 ° variable angular velocity put
Spray.No matter churning in the range of 360 ° or the spray of the pendulum in the range of 180 °, traditional constant speed swing campaign can changed
For angle speed swing campaign.Make the cut-pff wall to be formed section that there is attached drawing 4- attached drawings 6 but be not limited to the spy shown in attached drawing 4- attached drawings 6
Sign.
Embodiment 1
Certain project is deep foundation pit support dewatering project, and excavation of foundation pit depth is 8m, and design water-stop curtain is 14m.In water-stop curtain
In depth bounds, it is divided into 5 layers by lithological characteristic:It respectively ploughs and plants soil, silty clay, silt, silty clay, clay.Soil layer one
As be soft ~ plastic state, groundwater level depth 2m.
Main construction parameter design is as follows:Using three tube method construction technologies, water pressure 25MPa, flow 100L/min;Air
Pressure 0.7MPa, flow 2m3/min;Cement paste pressure 2MPa, flow 120L/min;Playpipe 1 promotes speed 16cm/min;
Angle gear ratio between the average rotary speed 12r.p.m of variable-speed dynamic head, maximum and minimum is 1:10, speed change should meet throwing
Object linear rule.
Under conditions of above-mentioned construction parameter, the single width wall plane shape that is formed in foundation soil be length be 2.0m,
Thickness is 0.2m, with specific reference to attached drawing 4.
Embodiment 2
Certain water conservancy cut-pff wall engineering, the high 12m of dam body, soil property of building a dam are general clay;Dam foundation soil property is respectively silty clay, sand
Class soil, small particle gravel soil, silty clay, clay.Soil layer generally hard ~ plastic state, design cut-pff wall depth are 20m.
Main construction parameter design is as follows:Using three tube method construction technologies, water pressure 30MPa, flow 120L/min;Air
Pressure 0.7MPa, flow 2m3/min;Cement paste pressure 2.5MPa, flow 150L/min;Playpipe 1 promotes speed 12cm/
min;Angle gear ratio between the average rotary speed 10r.p.m of variable-speed dynamic head, maximum and minimum is 1:6, speed change should accord with
Close parabolic rate law.
Under conditions of above-mentioned construction parameter, the single width wall plane shape that is formed in foundation soil be length be 1.6m,
Thickness is 0.35m, with specific reference to attached drawing 4.
Traditional high pressure jet grouting technique, the size of jet stream operating radius except having outside the Pass with jet pressure, flow,
Promotion and swing speed with jet pipe jet hole also have much relations.In the case where foundation soil is processing condition, jet stream is to certain point
Injecting time is longer, its operating radius is bigger;Phase contrajet is shorter to the injecting time of certain point, its operating radius more
It is small.According to the characteristics of high pressure jet grouting equipment widely used in current engineering, promotion speed and swing speed in work
Degree is preset parameter.Therefore the flat shape of churning is the planar shaped that circular, pendulum spray flat shape is symmetrical sector, sprays surely
Shape is similar to plate-shaped.This patent scheme is intended to, by controlling, changing swing speed, by the swing of original constant speed, be changed to speed change
Swing.Swing speed i.e. perpendicular to cut-pff wall direction is fast, parallel to cut-pff wall direction swing speed it is slow.It is each by controlling
The injecting time of section swing angle, reaches the target that this patent scheme is pursued.The cut-pff wall that this patent scheme is ultimately formed
Thickness and flat shape can be set according to actual needs.The flat shapes such as rectangle, square, ellipse, dolioform can be formed,
See attached drawing 4- attached drawings 6.
Although the various embodiments described above are described, those skilled in the art once know basic wound
The property made concept can then make these embodiments other change and modification, so the foregoing is merely the embodiment of the present invention,
Not thereby the scope of patent protection of the present invention, every equivalent structure made using description of the invention and accompanying drawing content are limited
Or equivalent process transformation, other related technical areas are directly or indirectly used in, are similarly included in the patent of the present invention
Within protection domain.
Claims (7)
1. the construction method of high pressure spray jetting soil cut-pff wall, it is characterised in that:Construction method is implemented based on wall-forming device,
Wall-forming device includes the angle speed rotary swing power head that can do angle speed swing campaign(5), angle speed rotary swing power head(5)Top
Portion is equipped with hoisting mechanism(6), angle speed rotary swing power head(5)Below or above be equipped with swivel joint(3), swivel joint(3)
Side be equipped with single channel, binary channels or triple channel delivery pipe(4), swivel joint(3)Connect playpipe(1), playpipe(1)
End be equipped with spray-hole(2);Delivery pipe(4)To spray-hole(2)Conveying high-pressure water, gas and cement mortar;Angle speed rotary motive power
Head(5)It can variable angular velocity churning or the variable angular velocity pendulum spray in the range of 180 ° in the range of 360 °;
Construction method includes the following steps:
A, according to cut-pff wall or seepage proof curtain determine construction access road positioned, unwrapping wire, and according to spray technology, radius, make
Spray-hole away from;
B, using drilling machine prebored hole, hole diameter, drilling depth and borehole perpendicularity should all meet design requirement;
C, high spray booth vehicle is in place, by playpipe(1)In the hole of tripping in drilling machine preboring;Start high-pressure hydraulic pump, air compressor and water
Slush pump, inspect medium injection it is normal after, then successively start angle speed rotary swing power head(5)And hoisting mechanism(6);
D, angle speed rotary swing power head(5)Variable angular velocity churning or the variable angular velocity pendulum spray in the range of 180 ° in the range of 360 °,
Traditional constant speed swing campaign is made to change into angle speed swing campaign;And it can reach in above-mentioned angular range and have grade or stepless
Variable angular velocity;
E, playpipe(1)In hoisting mechanism(6)Under the driving of constant speed, design curtain height is promoted to, that is, completes one section of wall
Construction;By the sequence construction in two sequence holes, the construction of whole cut-pff walls or curtain is completed.
2. the wall-forming device according to claim 1 based on high-pressure injection process water soil cut-pff wall, it is characterised in that:Institute
State angle speed rotary swing power head(5)By gear-box(51), power set(52)And controller(53)Composition;Gear-box(51)To subtract
Fast gear-box, power set(52)For phase asynchronous ac variable-frequency electric motor, controller(53)For frequency converter;Phase asynchronous exchange
The output terminal of adjustable frequency motor is connected to reduction gear box, and the output terminal of reduction gear box is connected to playpipe(1);Frequency converter control
It makes phase asynchronous ac variable-frequency electric motor rotating speed and then controls playpipe(1)Rotating speed.
3. the wall-forming device according to claim 1 based on high-pressure injection process water soil cut-pff wall, it is characterised in that:Step
In rapid A, spray-hole away from determine determined according to the soil layer lithological characteristic and nozzle parameter of construction ground.
4. the wall-forming device according to claim 1 based on high-pressure injection process water soil cut-pff wall, it is characterised in that:Step
In rapid B, using drilling machine prebored hole, drilling internal diameter is more than playpipe(1)Outer diameter;Hole depth is the depth of cut-pff wall or seepage proof curtain
Degree;Pore-forming perpendicularity deviation is in 1%.
5. the wall-forming device according to claim 1 based on high-pressure injection process water soil cut-pff wall, it is characterised in that:Step
In rapid C, start high-pressure hydraulic pump, air compressor and cement slurrypump;In high-pressure hydraulic pump, water pressure 25MPa-30MPa, flow
100L/min-150L/min;In air compressor, air pressure 0.7MPa-1.0MPa, flow 2m3/min-3m3/min;Cement
In stock pump, cement paste pressure 2MPa-2.5MPa, flow 120L/min-150L/min.
6. the wall-forming device according to claim 1 based on high-pressure injection process water soil cut-pff wall, it is characterised in that:Step
In rapid C, start angle speed rotary swing power head(5)And hoisting mechanism(6);Angle speed rotary swing power head(5)Average rotary speed
10r.p.m-12r.p.m, and the angle gear ratio between maximum and minimum is 1:10-1:6;Hoisting mechanism(6)Promotion speed
12cm/min-16cm/min。
7. the wall-forming device according to claim 1 based on high-pressure injection process water soil cut-pff wall, it is characterised in that:Institute
The cut-pff wall of formation or the thickness of seepage proof curtain are 200mm-600mm.
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CN109024643A (en) * | 2018-08-09 | 2018-12-18 | 中国地质大学(北京) | A kind of water-stop curtain constructing device, equipment and waterproof curtain construction method |
CN110042854A (en) * | 2019-04-25 | 2019-07-23 | 内蒙古大雁矿业集团有限责任公司 | Super-pressure angular domain speed change jet stream grouting method and curtain wall |
CN110144920A (en) * | 2019-06-06 | 2019-08-20 | 山东省机械施工有限公司 | Bivariate double pump whirl spraying seepage proof curtain wall-forming device and its construction method |
CN110144920B (en) * | 2019-06-06 | 2023-09-15 | 山东省机械施工有限公司 | Double-variable double-pump rotary spraying anti-seepage curtain wall forming device and construction method thereof |
CN114345176A (en) * | 2021-12-31 | 2022-04-15 | 徐州徐工基础工程机械有限公司 | Combined stirring device and stirring method |
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Inventor after: Zhou Chong Inventor after: Wang Zhaojun Inventor after: Yao Zhanyong Inventor after: Zhou Guangquan Inventor before: Zhou Chong Inventor before: Wang Zhaojun |